21228478

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{563}}^1\times {\mathrm{1109}}^1$

素因数の和:1691

約数の個数: 16

約数和(自身を含む): 33806160

約数和(自身を除く): 12577682

約数列:

[1, 2, 17, 34, 563, 1109, 1126, 2218, 9571, 18853, 19142, 37706, 624367, 1248734, 10614239, 21228478]

約数ペア:

[(1, 21228478), (2, 10614239), (17, 1248734), (34, 624367), (563, 37706), (1109, 19142), (1126, 18853), (2218, 9571)]